Possible Clues:

• Fictional king
• Bob ____ (Newfie hockey caster)
• Iconic American composer Porter
• General name for group of plants as fuel, we hear
• "Unforgettable" singer Nat King
• Old king of nursery rhymes
• He had a 1948 #1 hit with 'Nature Boy'
• George --, actor who found fame in radio's 'A Life of Bliss'
• Tune penner Porter
• Porter or Younger